不同苗龄移栽对山西早熟区春玉米生长及产量的影响

Effects of Different Seedling Age of Transplanting on Growth and Yield of Spring Corn in Early Mature Area of Shanxi Province

为了探索在山西早熟区无膜种植玉米的新模式及玉米育苗移栽的最佳移栽苗龄,采用完全随机区组设计大田试验,以覆膜直播为对照,分析了不同苗龄移栽对玉米生育进程、株高与产量及其构成因素的影响。结果表明,各苗龄移栽玉米的生育进程要略慢于对照。移栽具有降低株高的效应。虽然各苗龄移栽玉米的产量均低于对照,且随着移栽苗龄的增大呈现出差距加大的趋势,但通过移栽可以在该地区实现无膜种植玉米,其中二叶移栽的玉米产量与对照无显著差异,较覆膜直播(CK)仅减产9%。因此,在此试验条件下二叶期是山西早熟区玉米的最佳移栽苗龄。

In order to explore the new mode of film - free corn cultivation in early mature area of Shanxi and identify the best transplanting age of maize seedling in the region, a field experiment with completely randomized block design was employed to analyze and compare the effects of different transplanting ages of maize seedling on the growth process, plant height and yield as well as its component characters. The results showed that the growth process of various maize seedlings by transplanting at different ages was slightly slower than the contrast. Transplanting made plant height tow. Although the yields of maize seedlings by transplanting at different ages were not as good as control, and the gap in- creased with the increase of transplanting age, maize could be planted without plastic film in the region by transplanting. There was no significant difference between the yield of maize transplanted at the age of two leaves and the contrast. Its yield reduced only by 9% compared with film - mulching maize （CK）. Therefore, maize at the age of two leaves can be considered as the best transplanting period in early mature area of Shanxi under the condition of this experiment.